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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [testsuite/] [g++.dg/] [opt/] [alias1.C] - Blame information for rev 693

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Line No. Rev Author Line
1 693 jeremybenn
// Test that type punning using an anonymous union works with strict aliasing.
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// { dg-do run }
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// { dg-options "-O2 -fstrict-aliasing" }
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extern "C" void abort ();
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void f (long i)
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{
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  union
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  {
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    long ui;
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    float uf[20];
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  };
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  ui = i;
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  if (uf[0] != 42.0)
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    abort ();
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}
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int main ()
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{
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  union U { long i; float f[20]; } u;
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  u.f[0] = 42.0;
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  f (u.i);
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}

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